Apparatus for making coffee and the like



N. DE MATTEL UKE APPARATUS FoR MAKING COFFEE AND THE l.

APPLICATU ."LED No 7' m9' Patentelov. 2, 1920' l 4 UNITED STATES PATENT OFFIC.

NATALE DE MATTEI, OF TURIN, ITALY.

Specification of Letters Patent.

Patented Nov. 2, 1920.

Application filed November 7, 1919. Serial No. 336,514.

To @ZZ whom t may concern:

.Be it known that I, NATALE Dn MATTEI, a subject of the King of Italy, .residingl at rIurin, Italy, have invented certain new and useful Improvements in Apparatus for Making Coffee and the like; and I do hereby declare the following to be a full, clear, and

-exact descriptiony of the invention, such as the simultaneous preparation in one opera-y tion only, of several cups of coffee or the like.

The main characteristic feature of the multiple generating group according to the invention consists in this that the receptacle, provided with a perforated bottom or lter mounted inside the removable cup and intended to contain the coffee powder, is subdivided into a plurality of substantially equal compartments by means of one or more partitions, while the bottom of the removable cup, corresponding to each com partment of the receptacle, is provided with as many discharge nozzles.

Gwing to this arrangement the mass of the liquid which has traversed the coffee powder contained in the receptacle leaves the bottom of the said receptacle subdivided into as many equal portions as there are compartments in the receptacle. Each of said portions leaves separately through the corresponding discharge nozzle of the cup in order to be received in one of a plurality of cups arranged below the generating group.

For the purpose of insuring the exact ad justing of the receptacle into the removable cup so that each compartment of the said receptacle may be exactly superposed to the corresponding discharge nozzle of the cup, the partitions of the receptacle project slightly underneath the bottom of the latter and come in engagement with grooves provided in the bottom of the cup; or, the said partitions are hollow and in the bottom of the removable cup there are provided wings or ribs engaging with the cavity of the corresponding partition.

Some construe-.tional forms of the said generating group are shown, by way of eX- ample, in the accompanying drawing in which F igure l shows a first form of the whole of the group in vertical section ,-Fig. 2 isa plan view of the same ;-Fig. 3 shows the receptacle in plan views-Fig. l shows a second forni of the whole of the group in vertical section 5ml? ig. 5 shows the corresponding receptacle in plan view.

The generating group according to the rstform of construction (see Figs. l to 3) comprises the connection l which by means of its lateral flange l may be connected to the water and steam inlet pipe which in its turn may be connected to the boiler through a suitable cock.

The hollow piece 2 which is funnel shaped is screwed to the lower screwthreaded end l of the connection l, is closed at the lower part by the perforated disk 3 and provided with a suitable packing el, made of rubber, asbestos or any other suitable material., inserted in a suitable annular recess of the member 2. 0n a suit-able projection 2f nrovided on the external surface of the piece is mounted the coupling ferrule 5 in such a manner as to be capable of rotating, being held in position by means of a nut G screwed on. the screwthreaded part 2 of the ment ber 2. The rotating ferrule 5 (see Fig. 2) provided with a handle 5 is formed with an internal mutilated screwthread 5 of preferably multiple pitch. The removable cup 7, provided with the handle 7 is on its eX- ternal surface provided with a corresponding screwthread 7 capable of engaging with the screwthread 5 of the rotating ferrule 5. The cup 7 has an internal cavity capable of receiving the removable recepe tacle- 8 with the perforated bottom 8', into which the coffee powder is introduced, said receptacle being supported by its upper flange upon a suitable projection of the internal cavity of the cup 7.

According to the present invention and to the example shown on the drawing the receptacle 8 is subdivided into two equal compartments by means of the partition 9 while in the bottom of the removable cup 7 there are provided, corresponding to each The generating group according to the' second constructional form as shown in Figs.`

d and 5 is substantially identical lto the one of the lirstv vform hereinbefore described. The difference consists only in that the partition 9 is constituted by a double wall while the partition 12 projecting from the bottom of the cup 7 engages within the cavity of the double wall 9 and insures the exact adjusting of the receptacle 8.

The working of the improved apparatus hereinbefore'described is as follows.

When the desired quantity of coffee powder has been introducedinto the receptacle 8 and the latter has beenV inserted into the cavity provided in the cup 7, the latter is applied against the ferrule 5, by rotating the latter by means of the handle 5', whereby theengagement of the screwthread 5 with the screwthread 7l of the cup 7 is effected, so that the latter is coupled to the ferrule 5 and forced upward until its upperl edge land the one of the receptacle 8 fit tightly against the packing il. Now, rhotwater and steam under pressure are introduced through the connection l. The mass of liquid which has traversed the coffee powder and which has been transformed into beverage of coffeey leaves the perforated bottom4 8 uniformly subdivided into two equal portions, and any one of the said portions leaves separately by the corresponding discharge nozzle 10 vand-'is collected in separate cups arranged underneath the generating group. Owing to this arrangement it is thus possible si- Lessines multaneously to prepare in one operation only two cups of codes.

ln the example shown in the drawing it has been assumed that the receptacle 8 is subdivided into two compartments only by means of the partition 9 and that the removable cup is provided therefore with two' tachably connecting it to said connectionV and a plurality of discharge nozzles, and

a perforated container in said cup having A as many compartments as there are nozzles,

each compartment arranged to register with a nozzle. i

2. in an infusion apparatus, a connection for the end of a pipe supplying hot water or steam, a perforated dispensing plate in the end of said connection, a rotatable fer-` rule on said connection having a handle, said ferrule having a multiple thread, a cup having a handle, and aplurality of nozzles and a multiple thread for co-action with the first mentioned thread, a partition dividing tie cup into as many compartments as there are nozzles, a perforated Vcontainer within said cup and a packing in the end of said connection against which the edge of the cup is forced by the movement of the ferrule handle. y

in testimony that l claim the foregoing as my invention I have sio'ned my name.

NATALE? nn MATTEL 

